"Against that I have provided," the Fleming said. He opened the door. "See you that stone slab, above a foot in thickness; it looks solid, but it is not. It is worked by a counterpoise, and when it is lowered," and touching a spring, it began to descend, thus closing the stairway, "not only would it baffle them did they find the entrance above, but it would prevent any fire reaching here. The staircase is of stone, and above us is a strongly arched cellar, which would resist were the whole house to fall upon it." CHAPTER VIII A COMBAT IN THE TOWER "I see that you are safe against fire, sir," Edgar said, when the stone slab had descended and they had closed the door behind it; "but were the walls of the house to fall in you might be buried here, as I hear many drunken wretches were yesterday in the cellars of the Savoy." "I have means of escape," the merchant said, going to the other side of the apartment, where there was a massive iron door, which they had not before noticed. "Here," he said, "is a passage leading under the street; at the end it ascends, and is closed at the top by a massive panel in the hall of the house opposite. When I took this house a compatriot lived there, and it was with his consent that I made the passage, which might be useful in case of need, to him as well as to me. He returned to Flanders three years since, and the house has been occupied by an English trader, who knows naught of the passage, so that, at will, I can sally out by that way." "And how is your dame, sir?" Albert asked. "I trust that she is none the worse for her transport here." "I trust not, young sir; she swooned as I brought her down, but I at once poured some cordial between her lips, and when she opened her eyes, just before you came down, I assured her that we were all safe, and that there was no cause for the least fear; thereupon she closed her eyes again, and is, methinks, asleep. When she wakes I shall give her the medicine that my daughter brought. I trust that she will erelong recover. Her attack was doubtless brought on by the news that we received yesterday of the murder of so many of our countrymen. We had already talked of taking refuge here, but deemed not that there was any pressing need of haste, for the front door is a very strong one, and could have resisted any attacks long enough to give us ample time to retire here." "How do you manage to breathe here, sir, now that the stone slab is down and the door closed? I see not how you obtain air." "For that I made provision at the time it was built. Here are two shafts, six inches square; this one runs up into the chimney of the kitchen and draws up the air from here; the other goes up to a grating in the outer wall of the house in the yard behind. It looks as if made for giving ventilation under the floors or to the cellar, and through this the air comes down to take the place of that drawn upwards by the heat of the chimney."